Sawmill-carriage feed



(No Model.) 3 Sheets+$heet 1..

I A. B. PALM-ER.

SAWMILL CARRIAGE FEED.

No. 475,046. Patented May .17, 1892.

i M fig WW (No Model.) a Sheets+8heet 2.

A. B. PALMER. SAWMILL CARRIAGE FEED.

No. 475.046].- Patented May 17, 1892.

R 6 e h S 3 R E M L A P R.

A m d o M 0 m SAWMILL CARRIAGE FEED.

Patented May 17, 1892'.

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UNITED STATES PATENT OFFICE.

AMOS B. PALMER, QF PORT ALLEGANY, PENNSYLVANIA.

SAWMILL-CARRIAGE FEED.

SPECIFICATION forming part of Letters Patent No. 475,046, dated May 17,1892.

Application filed April 22, 1891. Serial No. 390,029. (No model.)

To all whom it may concern:

Be it known that I, AMos B. PALMER, a citizen of the United States,residing at Port Allegany, in the county of McKean and State ofPennsylvania, have invented a new and useful Sawmill-Carriage Feed, ofwhich the following is a specification.

This invention relates towood-sawing machines, and more especially tocircular-sawing-machine-carriage feed devices.

The object of the invention is to produce certain improvements inmachines of this character; to which end it consists in the details ofconstruction hereinafter more fully described and claimed, and asillustrated on the sheets of drawings, wherein Figure 1 is a plan viewof this device. Fig. 2 is an elevation of the left side. Fig. 3 is alongitudinal section on the line 3 3. Fig. 4 is a perspective detail ofthe link broken, the parts which it connects being also shown. Fig. 5 isa perspective detail of the two-section pitman. Fig. 6 is a left-sideelevation showing a modification. Fig. 7 is a perspective detail of theshifting mechanism.

Referring to the said drawings, the letter F designates the mainframe-work of the device; A, the saw-arbor carrying the saw S and drivenfrom the power-wheel P; T, the tracks for the carriage; D, a drum aroundwhich passes a rope R, which is connected to the two ends of thecarriage G, and Q the shaft upon which this drum D is mounted. When thisshaft is revolving in one direction it will be obvious that the carriagewill be moved forward and when in the opposite direction the carriagewill be moved backward.

Although I have thus described the carriage-operating devices which Ipreferably use, it will be understood that I may employ others withoutaffecting the remainder of my invention.

Upon the arbor A is a pulley 1, connected by a belt 2 with a pulley 3,mounted on a shaft 4, which is journaled at one end in the frame F, andhas a pivoted support 5 near its other end. Upon this extremity issecured a friction-wheel 6, which travels inside a drum 7,

that is secured upon the shaft Q. It is obvious that when thisfriction-wheel 6, which is of considerable size, is drawn into contactlow it.

with the rim of the drum 7 and the parts are revolving in the properdirection, which is indicated by arrows, the carriage will be drawnbackward and at considerable speed.

Upon the end of the arbor A is a pulley 10, from which a belt 11 leadsover a pulley 12, thence backward and over a pulley l3, thence over apulley 14, adjacent that numbered 12, and then back to the pulley 10 atthe point of starting. As seen in Fig. 6, the belt 2 could be omitted,and the belt 11 might pass over the pulley 3 of the gig-shaft 4 bycontinuing the latter through the frame-work and locating the pulley 3at a proper point, and this belt 11 could lead from any suitable sourceof power other thanits saw-shaft.

The pulley 12 is mounted on ashaft l2 and has a friction-wheel12 at itsinner end standing adjacent the outside of the drum 7. In the samemanner the pulley 14:,whichis some what larger than the pulley 12, ismounted on a shaft l l and carriesa friction-wheel 14.; which, however,is somewhat larger than the friction-wheel l2 and stands immediately bevThe pulley 13 is mounted on a shaft 13 and carries a very smallfriction-wheel;

13 which stands inside the drum 7, all as best seen in Fig. 3. It willbe seen that the rotation of the arbor A in the proper direction drivesthe friction-wl1eels 12 andlgl in the same direction, and by reasoh'of,the pe-- 1 culiar belting the friction-wheel 13 is turned in theopposite direction, all as indicated by the arrows; but as the formertwo stand outside and the latter inside the drum 7 they will cause it toturn in the same direction whenriage O is drawn backward at considerablespeed, as is desirable, it may be forced for.- ward at variable degreesof speed,allof which are more or less than the speed of the returnmovement. My improved carriage-feed device is especially applicable tomachines wherein the stock being sawed is constantly changing in size,and the speed of the carriage-feed must be adjusted accordingly.

Any suitable mechanism may be used for moving the variousfriction-wheels into and out of contact with the drum; but the means Ipreferably employ are hand-levers H H and H respectively connected withrods P 3 1 P and P, which pass through the ends of the frame and areattached to boxes X, within which the various. shafts are journaled ad--jacent the friction-wheels. These levers are pivoted at their lower endsto brackets'K, carried by the frame, and springs E are preferablyproperly located to hold the various.

' friotiomwheels out of'contact with the drum when in. their normalpositions, pivoted. supports 5 and 50. permitting the inner ends of theshafts to move, as willv be necessary.

It is well known to those skilled in the art that as soon as the log issawed and the can riage rnoving devices are thrown'out, of gear of theshaft. 14., and is also connected with the pivoted support 5.. The rod Phaspiw oted thereto a link P, which connects. Witha, pin p in theadjacent. side of, the rod P and beyond. this link: the said rod Pextends tothe pivoted support 5, O-of the shaft. 13.. Thus it'aniy ofthe handles or levers. be drawn out,- ward power will be communicated tothepi-v- 'oted support 5 to throw the large friction- Wheel 6 intocontact with the drum 7 but as soon as one handle is pressed inward, so.that its connected friction-wheel will be thrown against; the drum, thesame movement throws the large. friction-wheel out. of. contacttherewith, Suitable devices (not, shown);are preferably employed forholding the hand-levers at whatever points they may be set. It, willoccur at once. that. if each of, the rods is connected to the pivotedsupport 5 and also to its own friction-wheel the movement of onefriction-wheel will cause the simultaneous movement. of the. others, andall of them, will be thrown into contact with the, drum at. the. sametime; but this I avoid, in the. following manner: The above-mentionedlink 1?- has a l t PQin which the pin 19 fits loosely, as seen in, Fig,4, and the rod P is in two sections, as seen in 5', which are looselyconnected by a pinand slot, as shown. This construction ermits, themovement. Of one lever, rod, box, and friction-wheel without, themovement of the others, but: causes the movement of the pivoted support5 simultaneously with the movement of each lever.

I do not confine myself to the exact details of construction, asconsiderable change may be made therein without departing from thespirit of my invention.

The feeding devices may be placed entirely independent of the saw-frameand driven from any source desired other than the saw-arbor.

What is claimed as new is- 1. In a saw-carriage feed, the combination,

- with the carriage, the carriage-feed shaft connected therewith, and adrum mounted on said shaft, of a large friction-wheel and a smallfricti'on-wheel within said drum and secured at the ends of swingingshafts, means for revolving these shafts in opposite directions, boxeson said shafts, a. hand-lever, and a rod connecting said hand-lever withboth, the boxes, one frictionr-wheel being out. of contact when theother is. in, contact; with the. drum, as and for. the purpose setforth.

2. In a saw-carriage feed, the combination,

with the carriage, the carriage-feed shaft connected. therewith, and.adrum mounted. on said shaft, of a large. friction-wheel and severalsmall friction-wheels of different sizes adjacent said drum, swingingshafts upon which said friction-wheels: are mounted, said shafts havingpulleys on their opposite ends, belting revolving thev shaft of thelarge wheel in one direction and of the smaller wheels in the oppositedirection, and means, substantially as described, for moving the free.ends of the oppositely-revolving shafts in opposite directionssimultaneously at will, as and for the:

purpose set. forth...

3-. In a saw-carriage feed, the combination, with the carriage, the.carriage-feed shaft connected therewith, a drum mounted on said shaft, alarge friction-wheel within said drum,.

mounted on a swinging shaft, and belting revolving said. shaft in adirection to return the carriage, when the-wh'eelis in contactwith thedrum,of a small friction-wheel mounted on a swinging shaft outside. thedrum, belting revolving this wheel in the same direction as the largefriction-wheel, a pivoted hand-lever, and a. rod in two sectionslooselyconnected, the outer section extending from said hand- IIO lever andconnected with the free end of the shaft of the smaller wheel and theinner section extending farther and connected with the shaft of theother wheel, as and for the purpose set forth.

4:. In a saw-carriage feed, the combination, with the carriage, thecarriagesfeed shaft connected therewith, a drum mounted on said shaft, alargofriction-wheel within said drum, mounted on a swinging shaft, andbelting revolv-ing'said shaft in a. direction to return the carriagewhen the wheel is in contact with the drum, of a. small friction-wheelmounted on a swinging shaft outside the drum,belting revolving thiswheel in the same direction as the large friction-Wheel, a still smallerfriction-wheel mounted on a. swinging shaft in side the drum, beltingrevolving this shaft in the direction opposite to the others,a pivotedIn testimony that I claim the foregoing as hand-lever, a rod connectedto the shafts of my own I have hereto affixed my signaturein to the twolarger friction-wheels and having a presence of two Witnesses.

pin, another hand-lever, another rod connect- 5 ing this hand-lever withthe remaining swing- AMOS PALMER ing shaft, and a link connected to thisrod and WVitnesses: having a slot loosely engaging said pin, as and M.J. COLOORD,

for the purpose hereinbefore set forth. 0. W. HOOKER.

